Attachment for type-writing machines



(No Model.)

N; W. HARTWEL'L. ATTAGHMENT'POR TYPE WRITING MAGHINESL No. 557,203.Patented Mar. 31,1896.

lnz ezz hi? UNITED STATES PATENT OFFICE.

NEWVTON IVALKER HARTVVELL, OF LOUISVILLE, KENTUCKY.

ATTACHMENT FOR TYPE-WRITING MACHINES.

SPECIFICATION forming part of Letters Patent-No. 557,203, dated March31, 1896.

Application filed May 24, 1894. Serial No. 512,258. (No model.)

To all whom it may concern:

Be it known that LNEwToN WALKER HART- WELL, a citizen of the UnitedStates, residing at Louisville, in the county of Jefferson and State ofKentucky, have invented certain new and useful Improvements inAttachments for Type-\Vriters; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

My invention relates to that class of improvements in attachments fortype-writing machines in which the object is to enable the operator tosee the characters as they are writ ten, and my particular improvementrelates to the device which supports the reflecting medium employed.

The object of my invention is to provide a bracket for holding areflecting-prism such as is described in the application for a patentmade by me as joint inventor with Thomas J. Howe, filed February 26,1894, Serial No. 501,570, which may be cheaply constructed, quickly andeasily attached to the type-writer, and which will hold thereflecting-prism in a correct position. v

In the drawings which form a part of this application, Figure l is aview of the lower side of a type-writer carriage with my i1nprovedbracket attached thereto. Figs. 2 and 3 are perspective views of thebracket alone.

My improved bracket is formed from thin flat steel or other suitablemetal, and consists of a shank a, the lower end of which is hollowed outat b, and from the upper portion of which extends at right angles to theshank the main portion 0. Near the upper end of the shank a is a slotcl, around which is the collar e. Extending at right angles from themain portion 0 is the arm f, the outer end of which is bent in andprovided with a flange g,

said end and flange being of such shape asto conform to the ends of theprism, which is rhomboidal in cross-section. In order to provide for theinequalities in the frames of different type-writers, I make the mainportion 0 of two parts which overlap each other, the outer part beingslotted and the under part being provided with threaded screw-holes, andthe two parts being secured together by means of the screws 3 and 4.

The brackets are secured to the sides of the type-writer carriage bymeans of the small screws 1 and 2, which are now used in the Remingtonmachine at these points, or thumbscrews may be substituted therefor.Screw 1 passes through the slot d and the collar 6 into the carriage.Screw 2 passes through the hollowed-out portion 1) of the shank a intothe frame, the head of the screw bearing on the lower end of the shankand holding it in position.

The object of the collar 6 is to prevent the bracket from coming incontact with the frictional roller which is used on the Remingtonmachines.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

An attachment for type-writing machines consisting of a metal bracketadapt-ed to be attached at the sides of the carriage and composed of amain portion having a downward extension or shank the lower end of whichis hollowed out, and with an arm extending from said main portion atapproximately right angles therewith, said arm being adjustably securedthereto, and its outer end being adapted to support a prismsubstantially in the manner and for the purposes set forth.

In testimony whereof I aiflx my signature in presence of two witnesses.

NEWTON WALKER HARTWELL.

Witnesses:

OHAs. I. GRovEs, M. L. WARD.

